/**
 * Copyright 2011-2019 Asakusa Framework Team.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.asakusafw.lang.compiler.model.graph;

/**
 * A property of {@link Operator}.
 */
public interface OperatorProperty {

    /**
     * Returns the {@link PropertyKind}.
     * @return the {@link PropertyKind}
     */
    PropertyKind getPropertyKind();

    /**
     * Returns the property name.
     * @return the property name
     */
    String getName();

    /**
     * Represents a kind of {@link OperatorProperty}.
     */
    enum PropertyKind {

        /**
         * operator input.
         */
        INPUT,

        /**
         * operator output.
         */
        OUTPUT,

        /**
         * operator value.
         */
        ARGUMENT,
    }
}
